299 citations · 2.2k across the 63 of their papers we have counts for
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Sustained Magnetorotational Turbulence in Local Simulations of Stratified Disks with Zero Net Magnetic Flux
S. W. Davis, J. M. Stone, M. E. Pessah
We examine the effects of density stratification on magnetohydrodynamic turbulence driven by the magnetorotational instability in local simulations that adopt the shearing box appr…
Angular Momentum Transport in Protoplanetary and Black-Hole Accretion Disks: The Role of Parasitic Modes in the Saturation of MHD Turbulence
Martin E. Pessah
The magnetorotational instability (MRI) is considered a key process for driving efficient angular momentum transport in astrophysical disks. Understanding its non-linear saturation…
Coronae as Consequence of Large Scale Magnetic Fields in Turbulent Accretion Disks
Eric G. Blackman, Martin E. Pessah
Non-thermal X-ray emission in compact accretion engines can be interpreted to result from magnetic dissipation in an optically thin magnetized corona above an optically thick accre…
On the Saturation of the Magnetorotational Instability via Parasitic Modes
Martin E. Pessah, Jeremy Goodman
We investigate the stability of incompressible, exact, non-ideal magnetorotational (MRI) modes against parasitic instabilities. Both Kelvin-Helmholtz and tearing-mode parasitic ins…